Sample usage for the host_aliases feature

[shakmoha]

Hi @hussein-awala ,
From the previous post I see that you have provided support for host_aliases now, could you please provide sample usage example on how we pass that via submit_app()

[hussein-awala]

I added some examples for driver configuration to the published documentation: https://hussein.awala.fr/spark-on-k8s/user-guide/examples/#driver-configuration, and here is host aliases example.

The documentation is currently built from the main branch, I'm working on versioning of the documentation for users who are not on the latest version.